Forensic pathologist Michael Benziger testified in court in Telluride on Wednesday during a hearing to determine whether the girls’ mother, Nashika Bramble, the owner of the Norwood farm, Frederick Blair, and a woman described as the “spiritual leader” of a small group living there, Madani Ceus, will stand trial.

The Telluride Daily Planet reported that Benzinger can’t definitively say how 10-year-old Makayla Roberts and 8-year-old Hannah Marshall died because their bodies were in such poor condition when they were found in September.

Investigators say a person living on the farm in Norwood about 35 miles northwest of Telluride told them Ceus ordered the children kept in a car without food or water for days.